LG LT600P Premium Refregirator Water Filter See supporting information below for compatible LG refrigerators Replace filter every 6 months or 200 gallons to maximize contaminant reduction Certified to deliver clean and healthy water by filtering out chlorine taste and odor and reducing contaminates and partulates Uses revolutionized technology for water filtration Not changing the filter could reduce the water pressure and make it ineffective. So keep an eye for lower water flow.